International Airlines Group, the owner of British Airways and Iberia, has actively bidding for the Irish government's share in Aer Lingus — and Ireland announced on Tuesday that they were selling their stake.

Memorial Day weekend is an ideal time to disrupt the US aviation system, when an estimated minimum of 2.6 million people are flying. Passengers on multiple flights had to go through delays when their aircraft had to be checked by officials, usually after a threat.